DE2903552A1 - Generator for electric vehicle with sinusoidal output - uses frequency control and forms approximation to ideal wave by simultaneous variation of polyphase outputs - Google Patents
Generator for electric vehicle with sinusoidal output - uses frequency control and forms approximation to ideal wave by simultaneous variation of polyphase outputsInfo
- Publication number
- DE2903552A1 DE2903552A1 DE19792903552 DE2903552A DE2903552A1 DE 2903552 A1 DE2903552 A1 DE 2903552A1 DE 19792903552 DE19792903552 DE 19792903552 DE 2903552 A DE2903552 A DE 2903552A DE 2903552 A1 DE2903552 A1 DE 2903552A1
- Authority
- DE
- Germany
- Prior art keywords
- generator
- setpoint generator
- frequency control
- vehicles
- variable speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 238000010276 construction Methods 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 230000015654 memory Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L13/00—Electric propulsion for monorail vehicles, suspension vehicles or rack railways; Magnetic suspension or levitation for vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
Sollwertgenerator für drehzahlstellbare elektrischeSetpoint generator for speed-adjustable electrical
Fahrzeugantriebe Die Erfindung betrifft einen mehrphasigen Sollwertspannungsgenerator,. der weitgehend sinusförmige Ausgangsspannungen liefert, die für die stufenlose Frequenzsteuerung von Dreh-bzwl Wanderfeldmotprantriebe von Fahrzeugen als Vergleichsspannung für die Aussteuerung der Umrichter dienen. Durch eine auf alle Ausgangsspannungen gemeinsam wirkende Amplitudensteuerung soll ein optimaler Betrieb der Dreh- bzw. Wanderfeldmotoren ermöglicht werden. Vehicle drives The invention relates to a multiphase setpoint voltage generator. which supplies largely sinusoidal output voltages, which are necessary for the stepless frequency control of rotary or traveling field motor drives of vehicles as a comparison voltage for serve to control the converters. By one on all output voltages in common Acting amplitude control is intended to ensure optimal operation of the rotary or traveling field motors be made possible.
Bisher ausgeführte mehrphasige Sollwertspannungsgeneratoren für die Aussteuerung der Umrichter auf Fahrzeugen mit Dreh-bzw Wanderfeldmotorantrieben besitzen üblicherweise einen verstimmbaren Sinusoszillator, aus dessen Ausgangsspannung, mit Hilfe von in Analogtechnik ausgeführten Rechenoperationen, die gegeneinander phasenverschobenen Ausgangsspannungen erzeugt werden. Der unterschiedliche Phasengang der einzelnen Schaltungsteile und der Amplitudenverlust des Sinusozillators bei Frequenzerhöhung um mehr als den Faktor 1:30 erfordert allgemein eine Aufteilung des gesamten Frequenzstellbereichs in einzelne, in Stufen umschaltbare, Bereiche wodurch sich für den praktischen Einsatz eine ganze Reihe von Problemen ergeben.Multi-phase setpoint voltage generators for the Control of the converter on vehicles with rotary or traveling field motor drives usually have a detunable sine oscillator, from whose output voltage, with the help of arithmetic operations carried out in analog technology, which oppose each other phase-shifted output voltages are generated. The different phase response of the individual circuit parts and the loss of amplitude of the sine oscillator Increasing the frequency by more than a factor of 1:30 generally requires a division of the entire frequency setting range in individual ranges that can be switched in steps which results in a whole series of problems for practical use.
Der Erfindung liegt die Aufgabe zugrunde, die bei den Bereichsumschaltungen auftretenden störenden Unsymmetrien beim Betrieb von elektrischen Fahrzeugantriebsmotoren zu unterbinden.The invention is based on the object of the range switchovers occurring disruptive asymmetries in the operation of electric vehicle drive motors to prevent.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß als Vergleichsspannung für die Aussteuerung von Umrichtern bei frequenzstellbaren Fahrzeugantrieben mit Dreh- bzw. Wanderfeldmotoren, die Sinusform durch feinste Treppen annähernde, gegeneinander phasenverschobene und symmetrische Ausgangsspannungen eines Sollwertgenerators dienen, der sich mit einem Frequenzstellbereich von mehr als 1:10 000 ausführen läßt. Auf diese Weise ist ein Fahrbetrieb von der Kriech- bis zur Maximalgeschwindigkeit ohne Bereichsumschaltungen möglich.This object is achieved according to the invention in that as a comparison voltage for the control of converters in frequency-adjustable vehicle drives with Rotary or traveling field motors, approximating the sinus shape through the finest stairs, against each other phase-shifted and symmetrical output voltages of a setpoint generator are used, which can be performed with a frequency setting range of more than 1:10 000 leaves. In this way, driving is from the creeping speed to the maximum speed possible without range switching.
Die sinusförmigen Ausgangsspannungen mit gemeinsam einstellbarer Amplituden werden mit Hilfe von Zählern, festprogrammierten Speichern, Digital-Analog-Wandlern und Multiplizierern erzeugt. Ein über mehrere Dekaden weitgehend linearer Spannungs-Frequenz-Umsetzer setzt die Frequenzsollwertspannung in eine Taktfrequenz um, die mit jedem Impuls den Zählerinhalt eines Zählers um eins erhöht, dessen Zählrate der Unterteilung der zu erzeugenden Sinusschwingung in Richtung der Zeitachse entspricht. Den Jeweiligen Zählerzuständen entsprechend werden über festprdgrammierte Speicher die digital verschlüsselten Amplitudenwerte der gegeneinander phasenverschobenen Sinusschwingungen Digital-Analog-Wandlern zugeführt, die an ihren Ausgängen Spannungen konstanter Amplitude liefern und die Sinusform durch feinste Treppen annähern, Die den betriebsmäßig entsprechenden Ausgangsamplituden lassen sich gemeinsam durch analoge Multiplizierer einstellen.The sinusoidal output voltages with mutually adjustable amplitudes are made with the help of counters, permanently programmed memories and digital-to-analog converters and multipliers. A voltage-frequency converter that is largely linear over several decades converts the frequency setpoint voltage into a clock frequency that is generated with each pulse the counter content of a counter is increased by one, its counting rate of the subdivision corresponds to the sinusoidal oscillation to be generated in the direction of the time axis. The respective Corresponding to the counter states, the digital encoded amplitude values of the phase-shifted sinusoidal oscillations Digital-to-analog converters are supplied, the voltages at their outputs are more constant Provide amplitude and approximate the sinusoidal shape through the finest stairs, which are operationally corresponding output amplitudes can be combined using analog multipliers to adjust.
In Figur 1, 2 und 3 ist die Erfindung beispielsweise dargestellt.In Figures 1, 2 and 3, the invention is shown for example.
Figur 1 zeigt das stark vereinfachte Blockschaltbild eines Fahrzeugantriebs bestehend aus dem Fre4uenzsollwertgeber Q1 dem Soll.-wertgenerator 0 bis aus dem UmrichterQ6und aus dem Dreh- bzw.Figure 1 shows the greatly simplified block diagram of a vehicle drive consisting of the frequency setpoint generator Q1 the setpoint generator 0 to from the Inverter Q6 and from the rotary or
Wanderfeldmotor t Der Sollwertgenerator seinerseits besteht aus dem Spannungs-Frequenz-Umsetzer X dem festprogrammierten Speicher 3, den Digi,tal-Analog-Wandlern 0 und aus den Multiplizierern Figur 2 zeigt ein Bild des Musters eines Sollwertgenerators in geöffnetem Zustand mit den Steckkarten Stromversorgung 8, Sinusformung Q9 und Amplituden-Steuerung euerung00.Traveling field motor t The setpoint generator itself consists of the Voltage-frequency converter X the permanently programmed memory 3, the Digi, tal-to-analog converters 0 and from the multipliers Figure 2 shows an image of the pattern of a setpoint generator in the open state with the plug-in cards power supply 8, sinusoidal shaping Q9 and Amplitude control euerung00.
Figur 3 zeigt ein Oszillogramm einer Ausführung mit drei Je um 1200 gegeneinander phasenverschobenen Ausgangsspannungen.FIG. 3 shows an oscillogram of an embodiment with three each around 1200 output voltages out of phase with one another.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19792903552 DE2903552A1 (en) | 1979-01-31 | 1979-01-31 | Generator for electric vehicle with sinusoidal output - uses frequency control and forms approximation to ideal wave by simultaneous variation of polyphase outputs |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19792903552 DE2903552A1 (en) | 1979-01-31 | 1979-01-31 | Generator for electric vehicle with sinusoidal output - uses frequency control and forms approximation to ideal wave by simultaneous variation of polyphase outputs |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2903552A1 true DE2903552A1 (en) | 1980-08-14 |
Family
ID=6061761
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19792903552 Ceased DE2903552A1 (en) | 1979-01-31 | 1979-01-31 | Generator for electric vehicle with sinusoidal output - uses frequency control and forms approximation to ideal wave by simultaneous variation of polyphase outputs |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2903552A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT376532B (en) * | 1980-12-20 | 1984-11-26 | Bbc Brown Boveri & Cie | CONTROL ARRANGEMENT FOR A RECTIFIER SYSTEM WITH A CONTROLLABLE SEMICONDUCTOR ACTUATOR |
DE3836531A1 (en) * | 1988-10-27 | 1990-05-03 | Telefunken Electronic Gmbh | Stepper motor controller |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2045971A1 (en) * | 1969-09-29 | 1971-04-15 | Gen Electric | Circuit arrangement for generating a multiphase alternating current |
-
1979
- 1979-01-31 DE DE19792903552 patent/DE2903552A1/en not_active Ceased
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2045971A1 (en) * | 1969-09-29 | 1971-04-15 | Gen Electric | Circuit arrangement for generating a multiphase alternating current |
Non-Patent Citations (1)
Title |
---|
Elektrische Bahnen 47 (1976) H.1, S.18-23 "Drehstromversuchsfahrzeug-DE 2500 mit Steuer- wagen-Systemerprobung eines Drehstromantriebes an 15 kV 16 2/3 Hz" * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT376532B (en) * | 1980-12-20 | 1984-11-26 | Bbc Brown Boveri & Cie | CONTROL ARRANGEMENT FOR A RECTIFIER SYSTEM WITH A CONTROLLABLE SEMICONDUCTOR ACTUATOR |
DE3836531A1 (en) * | 1988-10-27 | 1990-05-03 | Telefunken Electronic Gmbh | Stepper motor controller |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8127 | New person/name/address of the applicant |
Owner name: ROBERT BOSCH GMBH, 7000 STUTTGART, DE |
|
8181 | Inventor (new situation) |
Free format text: SCHUSTEK, SIEGFRIED EMMERICH, DIPL.-ING., 7759 IMMENSTAAD, DE |
|
8110 | Request for examination paragraph 44 | ||
8131 | Rejection |